/**
 * js实现的map
 */
//定义map  
function Map() {
	this.container = {};
}

//将key-value放入map中  
Map.prototype.put = function (key, value) {
	try {
		if (key != null && key != "")
			this.container[key] = value;
	} catch (e) {
		return e;
	}
};

//根据key从map中取出对应的value  
Map.prototype.get = function (key) {
	try {
		return this.container[key];
	} catch (e) {
		return e;
	}
};

//判断map中是否包含指定的key  
Map.prototype.containsKey = function (key) {
	try {
		for (var p in this.container) {
			if (p == key)
				return true;
		}
		return false;
	} catch (e) {
		return e;
	}
}

//判断map中是否包含指定的value  
Map.prototype.containsValue = function (value) {
	try {
		for (var p in this.container) {
			if (this.container[p] === value)
				return true;
		}
		return false;
	} catch (e) {
		return e;
	}
};

//删除map中指定的key  
Map.prototype.remove = function (key) {
	try {
		delete this.container[key];

	} catch (e) {
		return e;
	}
};

// 清空map  
Map.prototype.clear = function () {
	try {
		delete this.container;
		this.container = {};
	} catch (e) {
		return e;
	}
};

//判断map是否为空  
Map.prototype.isEmpty = function () {
	if (this.keyArray().length == 0)
		return true;
	else
		return false;
};

// 获取map的大小  
Map.prototype.size = function () {
	return this.keyArray().length;
}

// 返回map中的key值数组  
Map.prototype.keyArray = function () {
	var keys = new Array();
	for (var p in this.container) {
		keys.push(p);
	}
	return keys;
}

//返回map中的value值数组  
Map.prototype.valueArray = function () {
	var values = new Array();
	var keys = this.keyArray();
	for (var i = 0; i < keys.length; i++) {
		values.push(this.container[keys[i]]);
	}
	return values;
}
